Firearm barrel nut



FIG. 1 is a perspective view of the firearm barrel nut embodying the newdesign;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a rear view thereof.

The broken lines in the drawings depict portions of the barrel nut thatform no part of the claimed design.

CLAIM The ornamental design for a firearm barrel nut, as shown anddescribed.